Science & Mathematics - 18 December 2007

Where is the place where sun never sets/ rises, is it Canada & what is the reason?

2007-12-18 07:13:45 · 9 answers · asked by Devoted 1 in Astronomy & Space

helppppppppppppp

2007-12-18 07:13:23 · 6 answers · asked by Ana*stas*ia 2 in Zoology

I am a complete idiot when it comes to math, my poor daughter needs some homework help - could someone please help? Pretty please?

2007-12-18 07:11:13 · 6 answers · asked by Anonymous in Mathematics

4 + 1?

2007-12-18 07:10:49 · 4 answers · asked by clavdivs 4 in Mathematics

If I know the diameter of a circle, is it possible to find coordinates on it? For my project I have 10 points evenly on the circumference of a circle that I need to find out the coordinates (x,y) for. Is there a formula? Thanks!

2007-12-18 07:08:53 · 2 answers · asked by Drizzle 2 in Mathematics

We did a lab in school today on enthalpy and the heat of solutions. There was a question about why we shouldn't use the thermometer to stir the solution in the calorimeter (ours was just a makeshift one, a tiny styrofoam cup). So, why is it wrong to use a thermometer to stir the solution?

2007-12-18 07:06:33 · 4 answers · asked by Fanuilos 2 in Chemistry

2007-12-18 07:04:28 · 13 answers · asked by Anonymous in Mathematics

Will the "blessing " be evil or good? (I'm not asking those who don't believe about these things.I already know what your answer will be.)

2007-12-18 07:01:52 · 14 answers · asked by Deenie 6 in Paranormal Phenomena

2007-12-18 06:59:18 · 11 answers · asked by Anonymous in Geography

NaCl x H2O -->electrolysis (1/2)H2 (1/2)Cl2 NaOH.


And I can then use this Lye to make soap also?

2007-12-18 06:56:35 · 1 answers · asked by Anonymous in Chemistry

I'm looking to learn astral projection techniques as a beginner.

2007-12-18 06:56:23 · 6 answers · asked by Lia A 3 in Other - Alternative

2007-12-18 06:54:55 · 9 answers · asked by bigjoerodbigrod 1 in Physics

Eg, why doesn't it start to get warmer on Dec 22nd when the sun begins it journey back?

2007-12-18 06:54:01 · 6 answers · asked by Anonymous in Weather

2007-12-18 06:50:30 · 8 answers · asked by LIMMY 1 in Mathematics

OK, this is gonna be a doozy. I hope I don't lose too much credibility (if I ever had any) for asking this, but the idea occurred to me, so here goes. :)

We, as a planet, have an abundance of greenhouse gasses right now, right? They are bad and we not only need to cut down on their production, but it would be good to get rid of some we've already produced. So, why couldn't we build a giant tube or hose? One end would be attached to something in space (unmanned) and the other would be attached to something flying in the correct level of our atmosphere. We could just vacuum out some of the gasses, couldn't we?

Let the berating begin! :) But thanks to all serious answers. :)

2007-12-18 06:41:07 · 9 answers · asked by searching_please 6 in Astronomy & Space

Exmp: someting weighs 10 tons. something has a mass of 10 tons.

2007-12-18 06:39:23 · 18 answers · asked by Uchimataman 1 in Physics

2007-12-18 06:38:36 · 41 answers · asked by Anonymous in Zoology

i'm terrible at math...no matter how much i try i always get it wrong...so yahoo answers is really my last resort. im so much better at science, but unfortunately my quiz isnt in science today :(....if you can help me out here then please please do.

1. Solve the equation and select the letter of the correct answer.

0 = k^2 – 12k + 35
The solution set is {5, 7}.

The solution set is {–5, –7}.

The solution set is {5, –7}.

The solution set is {–5, 7}.


3. Solve the equation and select the letter of the correct answer.

u^5 – 13u^3 + 36u = 0
The solution set is {0, 2, 3}.

The solution set is {–3, –2, 0}.

The solution set is {–3, –2, 2, 3}.

The solution set is {0, –2, 2, –3, 3}.



5. Find an equation in standard form with integral coefficients that has the given solution set.

{–1, 5}

x^2 – 4x – 5 = 0

x^2 + 4x – 5 = 0

x^2 – 4x + 5 = 0

x^2 – x + 5 = 0

2007-12-18 06:35:22 · 6 answers · asked by dani m 1 in Mathematics

With our current reliance on fossile fuels and other forms of stored energy (coal, chemical) we are releasing excess waste heat (among other things) into the atmosphere. Looking for alternative 'green' energy sources is a great ideal, but my feel this could further impact the environment.

Assuming for argument that we can build a large mirror array in space and send captured solar energy safely to earth. That amounts to a new input of energy into our (closed?) system. How will we deal with the excess heat generated as a by product of doing work with that energy? Is there a way for us to efficiently radiate that heat into space?

2007-12-18 06:34:18 · 7 answers · asked by Web Wonder 1 in Physics

2007-12-18 06:33:29 · 3 answers · asked by Anonymous in Chemistry

2007-12-18 06:32:51 · 6 answers · asked by Anonymous in Chemistry

2007-12-18 06:32:11 · 4 answers · asked by North_Star 3 in Astronomy & Space

2007-12-18 06:31:26 · 12 answers · asked by Anonymous in Paranormal Phenomena

2007-12-18 06:30:02 · 1 answers · asked by Anonymous in Chemistry

the device translate the human language to electrical signal and it reaches to plants.it is accepted and given response by specific hormones and the plant sends the signal in the form of hormonal response.which converts to electrical signal and then is converted to human language.the questions like how much water or fertilizer it needs can be answered by plants,,,so help me out soon plz as i have to make a pproject on this within 4 daysss

2007-12-18 06:28:37 · 3 answers · asked by Anonymous in Engineering

A bubbling B boiling C lcold light D heat E color change F tempeture drop G smoke H explosion

2007-12-18 06:26:33 · 2 answers · asked by Skip 4 in Chemistry

what does this mean? please give me examples what is not constant?

2007-12-18 06:23:36 · 6 answers · asked by Narok 1 in Physics

2007-12-18 06:23:34 · 3 answers · asked by Anonymous in Geography

Your boss cuts you off when you try to explain the concept of buoyant force to him. Being the smart*** that you are, you come back later with a life vest full of lead pellets.

Explain.

2007-12-18 06:23:07 · 4 answers · asked by Anonymous in Physics

2007-12-18 06:23:05 · 3 answers · asked by meandyouu 1 in Medicine